Improvement in weighing devices



R. KIRKPATRICK. Weighing-Device.

No. 205,559. Patented July 2, i878.

@ggmsgas: I TNVENTOR:

MW IW/QGZZZ ATTORNEYS.

N-FETERS, FHOm-LITHOGRAPHER, WASHINGTON, 0 c.

UNITED STATES PATENT OFFICE.

ROBERT KIRKPATRICK, OF RICHMOND, (DEBEC P. O.,) NEIV BRUNSIVICK,

CANADA.

IMPROVEMENT IN WEIGHING DEvlCES.

Specification forming part of Letters Patent No. 205,559, dated July 2,1 :78 application filed April 23, 1878.

To all whom it may concern:

Be it known that I, ROBERT KIRKPATRICK, of the Parish of Richmond, DebecP. O., in the county of Carleton, Province of N ew Brun swick, andDominion of Canada, have invented a new and Improved Lifting andIVeighing Device, of which the following is a specification: I

The object of my invention is to provide a simple and convenient devicefor ascertaining the weight of articles too heavy for being placed onthe scale by the hands alone, and so constructed that such articles maybe elevated from the ground and weighed by the same device.

The invention consists in the combination of two lateral ratchetbarswith a central suspension-bar, having spring-pawls arranged to engage inthe teeth of the said side bars, and with a lever pivoted to the ends ofthe side bars, and provided with a central hook and detachable handles,one of the latter being graduated to serve as a scale-beam, as will behereinafter described.

In the accompanying drawing, Figure 1 represents a front view of mylifting and weighing device suspended on a hook and in position for use.Fig. 2 is an edge view of the same. Fig. 3 is a rear view of a portionof the device as shown in Fig. 1.

Similar letters of reference indicate corresponding parts.

A is the central bar, provided with a hook or an eye,tl, at its upperend for attaching or suspending it. B B are toothed bars arranged one oneach of two opposite sides or edges of the bar A, and held against thesame by the pawls C C, which are made in about the shape of a staple,pivoted with its two ends on opposite sides of the bar A by a pin goingthrough them and the bar A simultaneously, and grasping the teeth of thebars B B in the arch c of the staple.

The pawls C C are held pressed in the teeth of the side bars by springsD upon the bar A, and are provided with handles 0 0 by which they may beraised out of the said teeth against the pressure of the springs whendesired.

E is a lever connected by pivoting-pins c to the lower ends of the barsB B, either di rectly or by connecting-links I).

F is the hook to which the article intended to be raised and weighed issuspended, and is pivoted to the center of the lever E between the endsof the two bars B B.

Each end of the lever E is surrounded by two metallic bands, G, securedto the lever at a distance from each other, and each having an openingsuitable for inserting, and thus attaching to the lever E, the handles HH, by which sufficient leverage is gained to raise a heavy weight byoscillating the lever E upon the two pivots c, alternately, as fulcra,and thereby alternately supporting the weight on one of the bars B B,while the other is elevated in the grasp of its pawl to the height ofone or more teeth. One of the handles H is made of metal and graduatedwith notches h, like an ordinary scale-beam for hanging a movableweight, I, for weighing the article suspended to the hook F. For thispurpose the pawl C is raised by depressing its handle 0 out of contactwith the teeth of the bar B, thereby causing the lever E to hang onlyupon the pivot e of the other bar B, while the weight of the articlesuspended to the hook F is ascertained by moving the weight I into theproper notch h of the graduated beam H to counterbalance it.

Having thus described my invention, I claim as new, and desire to secureby Letters Patent The combination of the two lateral ratchetbars B Bwith the central suspension-bar A, having spring-pawls C C arranged toengage in the teeth of the said side bars, and with the lever E pivotedto the ends of the side bars B B, and provided with the central hook Fand the detachable handles H H, one of the latter, H, bein graduated toserve as a scalebeam, substantially as shown and described, and for thepurpose set forth.

ROBERT KIRKPATRICK.

Witnesses:

A. W. ALnovrsr, O. SEnewIcK.

